PH3256 Physics For Information Science
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Classical free electron theory - Expression for electrical conductivity – Thermal conductivity, expression- Wiedemann-Franz law – Success and failures - electrons in metals – Particle in a three dimensional box – degenerate states – Fermi- Dirac statistics – Density of energy states – Electron in periodic potential – Energy bands in solids – tight binding approximation - Electron effective mass – concept of hole.
UNIT-II SEMICONDUCTOR PHYSICS
Intrinsic Semiconductors – Energy band diagram – direct and indirect band gap semiconductors – Carrier concentration in intrinsic semiconductors – extrinsic semiconductors - Carrier concentration in N-type & P-type semiconductors – Variation of carrier concentration with temperature – variation of Fermi level with temperature and impurity concentration – Carrier transport in Semiconductor: random motion,drift, mobility and diffusion – Hall effect and devices – Ohmic contacts – Schottky diode.
UNIT-III MAGNETIC PROPERTIES OF MATERIALS
Magnetic dipole moment – atomic magnetic moments- magnetic permeability and susceptibility - Mag-
netic material classification: diamagnetism – paramagnetism – ferromagnetism – antiferromagnetism –
ferrimagnetism – Ferromagnetism: origin and exchange interactionsaturation magnetization and Curie
temperature – Domain Theory- M versus H behaviour – Hard and soft magnetic materials – examples
and uses-– Magnetic principle in computer data storage – Magnetic hard disc (GMR sensor).
UNIT-IV OPTICAL PROPERTIES OF MATERIALS
Classification of optical materials – carrier generation and recombination processes - Absorption emis-
sion and scattering of light in metals, insulators and semiconductors (concepts only) - photo current in
a P-N diode – solar cell - LED – Organic LED – Laser diodes – Optical data storage techniques.
UNIT-V NANODEVICES AND QUANTUM COMPUTING
Introduction - quantum confinement – quantum structures: quantum wells, wires and dots –– band gap
of nanomaterials. Tunneling – Single electron phenomena: Coulomb blockade - resonant- tunneling
diode – single electron transistor – quantum cellular automata - Quantum system for information pro-
cessing - quantum states – classical bits – quantum bits or qubits –CNOT gate - multiple qubits – Bloch
sphere – quantum gates – advantage of quantum computing over classical computing.
UNIT-1 ELECTRICAL PROPERTIES OF MATERIALS
Classical free electron theory - Expression for electrical conductivity – Thermal conductivity, expression- Wiedemann-Franz law – Success and failures - electrons in metals – Particle in a three dimensional box – degenerate states – Fermi- Dirac statistics – Density of energy states – Electron in periodic potential – Energy bands in solids – tight binding approximation - Electron effective mass – concept of hole.
UNIT-II SEMICONDUCTOR PHYSICS
Intrinsic Semiconductors – Energy band diagram – direct and indirect band gap semiconductors – Carrier concentration in intrinsic semiconductors – extrinsic semiconductors - Carrier concentration in N-type & P-type semiconductors – Variation of carrier concentration with temperature – variation of Fermi level with temperature and impurity concentration – Carrier transport in Semiconductor: random motion,drift, mobility and diffusion – Hall effect and devices – Ohmic contacts – Schottky diode.
UNIT-III MAGNETIC PROPERTIES OF MATERIALS
Magnetic dipole moment – atomic magnetic moments- magnetic permeability and susceptibility - Mag-
netic material classification: diamagnetism – paramagnetism – ferromagnetism – antiferromagnetism –
ferrimagnetism – Ferromagnetism: origin and exchange interactionsaturation magnetization and Curie
temperature – Domain Theory- M versus H behaviour – Hard and soft magnetic materials – examples
and uses-– Magnetic principle in computer data storage – Magnetic hard disc (GMR sensor).
UNIT-IV OPTICAL PROPERTIES OF MATERIALS
Classification of optical materials – carrier generation and recombination processes - Absorption emis-
sion and scattering of light in metals, insulators and semiconductors (concepts only) - photo current in
a P-N diode – solar cell - LED – Organic LED – Laser diodes – Optical data storage techniques.
UNIT-V NANODEVICES AND QUANTUM COMPUTING
Introduction - quantum confinement – quantum structures: quantum wells, wires and dots –– band gap
of nanomaterials. Tunneling – Single electron phenomena: Coulomb blockade - resonant- tunneling
diode – single electron transistor – quantum cellular automata - Quantum system for information pro-
cessing - quantum states – classical bits – quantum bits or qubits –CNOT gate - multiple qubits – Bloch
sphere – quantum gates – advantage of quantum computing over classical computing.